Cylinder for circuit breaker hydraulic spring operating mechanism and circuit breaker

Abstract

The invention discloses a cylinder for a circuit breaker hydraulic spring operating mechanism, and a circuit breaker, and relates to the technical field of the circuit breaker. The cylinder comprisesa body extending along an axis direction; a working piston cylinder extending along the axis direction, a working piston oil chamber communicated with the working piston cylinder, a first energy storage piston cylinder unit and a second energy storage piston cylinder unitarranged at two sides of the working piston cylinder are formed on the body; the first energy storage piston cylinder unit comprises a first energy storage piston cylinder and a first oil return chamber communicated with the first energy storage piston cylinder, the second energy storage piston cylinder unit comprises a secondenergy storage piston cylinder and a second oil return chamber communicated with the second energy storage piston cylinder; the first energy storage piston cylinder and the second energy storage piston cylinder extend along the direction vertical to the axis; a first charging oil chamber, a second charging oil chamber and a mounting hole are formed on the body; and a runner unit is arranged in the body. Through the cylinder disclosed by the application, the structure of the whole hydraulic spring operating mechanism can be simplified.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a cylinder block and a circuit breaker for a hydraulic spring operating mechanism of a circuit breaker. Background technique [0002] Both the working piston cylinder (referred to simply as the working cylinder) and the energy storage piston cylinder of the hydraulic spring operating mechanism of the circuit breaker are key parts of the hydraulic spring operating mechanism. The working piston cylinder, the reciprocating piston in it and the piston rod connected to the piston together form the working module of the hydraulic mechanism, while the energy storage piston cylinder provides the space for the reciprocating movement of the energy storage piston and stores the working power of the hydraulic spring operating mechanism. required hydraulic oil. [0003] Most of the working piston cylinders of existing hydraulic spring operating mechanisms are single oil chambers tha...

AI Technical Summary

Problems solved by technology

However, when it reaches a certain level, the energy storage spring assembly will be too high, the energy storage module will be too large, and multiple energy storage modules will cause too many connecting pipes and poor connection sealing, which will greatly increase the difficulty of installation of the entire device. It will also make the stress condition of the working piston cylinder more severe, and then make the performance of the hydraulic spring operating mechanism under the combination of the energy storage spring assembly worse, and the reliability of the whole mechanism becomes lower

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